What does this PR do?

Adds interactive column sorting to the three analytics tables (Daily Breakdown, Per-Model Breakdown, Top Skills). Previously the tables had fixed, hardcoded ordering. Now any column header can be clicked to sort by that column, with a second click toggling asc ↔ desc.

Related Issue

Fixes #17381

Type of Change

• 🐛 Bug fix (non-breaking change that fixes an issue)
• ✨ New feature (non-breaking change that adds functionality)
• 🔒 Security fix
• 📝 Documentation update
• ✅ Tests (adding or improving test coverage)
• ♻️ Refactor (no behavior change)
• 🎯 New skill (bundled or hub)

Changes Made

• web/src/pages/AnalyticsPage.tsx — added useTableSort<T> generic hook and SortHeader component; applied sorting to DailyTable, ModelTable, and SkillTable

Note on the Per-Model default sort: The previous hardcoded sort ordered by input_tokens + output_tokens combined. This PR defaults to input_tokens descending instead — a real column rather than a derived value. In practice the ranking is identical since input tokens dominate output by 3–10×, and using a real field keeps the sort hook generic without needing computed fields.

How to Test

1. Run cd web && npm run dev and open the Analytics page
2. Click any column header in the Daily Breakdown, Per-Model Breakdown, or Top Skills table — the table should sort by that column descending
3. Click the same header again — order should flip to ascending; the arrow icon updates accordingly
4. Click a different header — sort resets to descending on the new column; the inactive column headers show a dim ↕ indicator

Checklist

Code

• I've read the Contributing Guide
• My commit messages follow Conventional Commits (fix(scope):, feat(scope):, etc.)
• I searched for existing PRs to make sure this isn't a duplicate
• My PR contains only changes related to this fix/feature (no unrelated commits)
• I've run pytest tests/ -q and all tests pass
• I've added tests for my changes (required for bug fixes, strongly encouraged for features)
• I've tested on my platform: macOS 15

Documentation & Housekeeping

• I've updated relevant documentation (README, docs/, docstrings) — or N/A
• I've updated cli-config.yaml.example if I added/changed config keys — or N/A
• I've updated CONTRIBUTING.md or AGENTS.md if I changed architecture or workflows — or N/A
• I've considered cross-platform impact (Windows, macOS) per the compatibility guide — or N/A
• I've updated tool descriptions/schemas if I changed tool behavior — or N/A

Screenshots / Logs

1. default column for sorting shown (descending icons)
2. sorting functionality for columns (default neutral icons)